Hydrocarbon heating stove



Sept. 25, 1928. 1,685,095

H. B. REPPETTO HYDROCARBON HEAT ING STOVE Filed Feb. 7, 1927 2 Sheets-Sheet 1 g &

INVENTOR- ATTORNEY Sept. 25, 1928. 1,685,095

H B. REPPETTO HYDROCARBON HEAT ING STOVE Filed Feb. 7, 1927 2 Sheets-Sheet 2 INVENTOE QTT NEY Patented Sept. 25, 1928.

UNITED STATES HARVEY BENDER REPPETTO, OF CLYDE, OHIO.

HYDROCARBON HEATING STOVE.

Application filed February 7, 1927.

This invention relates to heating stoves, and more specifically to a. heater of the socalled radiant type in which vaporized oil or gasoline is employed as fuel. The primary object of the invention is to provide a heater of the open-front casing type in which liquid fuel is supplied to radiant burners, occupying an elevated position within the casing, from a fuel reservoir located within the lower part of the casing.

A further object is to provide a heater of the character mentioned which has mounted permanently thereon means whereby air pressure may be supplied to the reservoir for effecting elevation of the fuel to a gas generator whence the fuel is directed to a manifold for supplying a combustible mixture to the radiant burners. A

And a still further object is to provide, in a heater of the character mentioned, safe and efficient means for preheating the generator to fuel-vaporizing temperature for initiating the generation of gas to be supplied to the radiants, and an additional means whereby said generator is continuously heated.

With these and other objects in view, the invention resides in the features of construction. arrangement of parts and combinations of elements which will hereinafter be fully described, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of a heater embodying my invention;

Figure 2- is an enlarged top plan view of the manifold and generator;

Figure 3 is a. front elevation of the same, showing the auxiliary heating device;

Figure 4 is a sect-ion on line 44, Fig. 3:

Figure 5 is an enlarged cross section of said auxiliary heating device;

Figure 6 is an enlarged sectional view of the air controlling check valve; and

Figure 7 is an enlarged longitudinal section of the generator. v

Referring to said drawings, 1 designates a heater casing of openfront type herein shown as of a rectangular form more or less common in sheet-metal heating stoves wherein natural or artificial gas is used as fuel.

Located within the lower part of said casing is a gasoline tank or reservoir 2 having a filler tube 3 which leads outwardly from the top, or an upper portion, thereof through an end wall 1 of the casing 1 and which is provided with a close-fitting removable cap 4.

Rigidly mounted within the casing at an Serial No. 166.327.

appropriate elevation with respect to the reservoir 2 is a manifold 5, and superposed upon said manifold is a plurality of clay radiants 6 to which vaporized gas is supplied from the manifold through burner openings or perforated grids 7 embraced by the bases of the radiants.

Disposed horizontally within the casing adjacent to the manifold 5 is a generator tube 8 of any suitable type wherein, by heat applied thereto. the liquid fuel is converted into gas. The forward end of said generator opens into a shouldered portion 5 of the manifold, as shown, and the vaporized gas which enters said manifold from the generator commingles with air admitted through an opening 9 provided in the face of the manifold adjacent to the shoulder 5, whereby a readily combustible gaseous mixture is supplied through the manifold to the radiants.

Leading outwardly through an end of the casing 1 from the lower part of the reservoir 2 is a pipe 10 which carries a control valve 11, and communicating with said pipe through said valve is a tube 12 which leads to the outer end portion of said generator. The generator embodies a suitable valve 13 whereby the discharge of the fuel therefrom to the manifold may be controlled and which includes, as ordinarily, an axially disposed stem 14 carrying a hand operated wheel 15. the latter being located in the present em bodiment outside an end wall 1 of the casing 1, as shown.

The air pressure whereby the fuel is elevated to the generator 8 is supplied by a hand-operated pump. as 16. which is mounted vertically upon the heater casing in a convenient position. as by means of clamp-like supporting brackets 17. Said pump is connected to the upper part of the fuel reservoir. in the present illustration, by a tube 18, through the outwardly projecting end portion of the filler tube 3, a. suit-able valve structure. as 19. being appropriately located for checking the return flow of the pressure introduced in the reservoir by means of said pump. A pressure gauge, as 20. is located in an appropriate position, as upon the projecting end portion of the tiller tube, for visually indicating the pressure carried within the reservoir.

Means is provided whereby preheating of the generator 8 to gasoline-vaporizing temperature is effected, said means being in the form of a. tubular burner 21, hereinafter termed an auxiliary burner. Said auxiliary burner, which has a series of kerf-like passages 21 in its top face, is suitably supported in um'lerlying parallel relation to the generator. and is connected at one end to a tube which communicates with the top of the reservoir, in the instant case, by means of the tiller tube 3, through an intermediary valve 23 which may be opened and closed as required. hen said valve is opened, gas impregnated air or vapor from within the top of the reservoir is supplied under pressure to the auxiliary burner and, when ignited, directs a flame into contact with the generator for heating the same to a temperature at which the gasoline supplied thereto isvaporized.

It will be understood that, whereas in prior heaters of the general type to which the present invention relates. raw gas is supplied to a priming device and is there ignited for heating the generator. gaseous vapors, or gas 1mpregnated air, is employed in the auxiliary burner 21 of the present invention, thereby avoiding the objectionable features inherent in the prior priming devices referred to. When the generator has preliminarily been heated to vaporizing temperature, the valve 11, which has previously been closed, is opened to admit gasoline from the reservoir to the generator. The valve 13, also previously closed, is then opened to permit the gaseous vapor generatedv within the generator to discharge into the manifold, following which the valve 23 is closed to cut off the passage of vapor from the reservoir to the preheater. Said auxiliary burner will thence receive from the interior of the manifold a sufficient supply of gas to support a flame whereby the 7 generator is maintained operative, an avenue or passage 24 being provided in a member 25 which connects the manifold and the auxil iary burner. Said member 25, as herein shown, is of substantially T-coupling form and constitutes a bracket-like support by means of which the auxiliary burner is suspended from the manifold.

The valve structure 19 may be of any desired check-valve form, but it is preferred that it include, in addition to a self-seating check-valve member, as the ball 26, an additional manually operated seating member 27 whereby passage of air to and from the reservoir may positively be closed.

It will be noted that the structure described is self-contained, embodying permanently in a heater which may readily be transported from place to place a fuel reservoir and all the accessories required for the functioning of the heater.

What is claimed is 1. A heater of the character described comprising a casing, a liquid fuel reservoir within said casing. a manifold located above said reservoir, a liquid fuel generator having means of conununication with the lower portion of said reservoir and opening into said manifold, a burner for heating said generator, said burner having comn'iunication with the upper interior portion of said reservoir and also having communication with said manifold, and means for introducing air pressure within said reservoir.

2. A heater of the character described comprising a casing, a liquid fuel reservoir within said casing, means for introducing air pressure upon the fuel within said reservoir, a burner-supplying manifold located in an elevated position with respect to said reservoir, a generator communicating with the lower portion of said reservoir and adapted to be supplied by air pressure with liquid fuel from the lower part thereof, said generator being located to discharge into said manifold, a burner for heating said generator, said burner having communication with the top portion of said reservoir whereby it may be.

supplied with gas-impregnated air for initiating heating of said generator and also being in open communication with said generator whereby a moiety of the gas supplied to the latter is furnished thereto for maintaining said generator operative.

3. In a heater of the character described, the combination with a burner, of a manifold through which a vaporized liquid fuel is sup plied to said burner, a reservoir for liquid fuel located at a lower level with respect to said manifold, a liquid fuel generator arranged to discharge within said manifold, tubular means affording communication between the bottom portion of said reservoir and said generator, means for supplying air pressure to said reservoir for elevating fuel to said generator through said tubular means, an auxiliary burner for ap iilying heat to said generator, said auxiliary burner having com munication through a valve-controlled passage with the upper portion of said reservoir whereby gas impregnated air is supplied thereto for prelin'iinarily heating said generator, and also having communication with said manifold whereby vaporized fuel is supplied thereto from said manifold following such preliminary heating and the closing of said valve-controlled passage.

4. A heater of the character described comprising, the combination with burners and a manifold for said burners, of a liquid fuel reservoir located below said manifold, a gas generator opening into said manifold, means affording communication between the reservoir and said generator, means for introducing air pressure in said reservoir whereby the fuel may be elevated through said means of communication to said generator, and a burner arranged to apply heat to said generator, said burner being adapted to receive vaporized fuel from the top of the reservoir for initiating generation of gas in the generator and thereafter to receive from the manifold a moiety of the vaporized fuel delivered thereto from the generator, whereby said burner is maintained operative following cutting off of the direct supply from the reservo1r.

5. A radiant heater of the character described comprising a casing of open-front type having radiants mounted therein, a manifold wthin said casing through which vaporized fuel is supplied to said radiants, a liquid fuel reservoir located within said casing at a level below that of the generator, a pump mounted in fixed position on the casing and having connection with said reservoir whereby air pressure may be introduced within said reservoir, a generator opening into said manifold and adapted to receive fuel from said reservoir by the force of pressure contained within the latter, and means for heating said generator, said means including a preliminary heating device adapted to be initially supplied with gas impregnated air from within the top portion of the reservoir, and thereafter to be supplied from another source.

6. In a stove or heater, the combination with a liquid fuel reservoir wherein the fuel is maintained under pressure by introduced air pressure, a manifold elevated above said reservoir, a generator opening into said manifold and adapted to receive liquid fuel by pressure from said reservoir, a burner for applying heat to said generator, means providing communication between the upper portion of said reservoir and said burner whereby gas-impregnated air is supplied to the latter for effecting initial heating of said generator, and means affording communication between said manifold and said burner whereby a moiety of vaporized fuel delivered to the latter by the generator is supplied to said burner for maintaining the latter operative following closing of the means of communication between said reservoir and said burner.

7. A vapor burning device comprising an elongated burner chamber having an offset inlet chamber, an elongated vaporizer communicating with said inlet chamber, a burner adjacent said vaporizer having an inlet communicating with said first chamber, said vaporizer and burner therefornested in proximity to said chambers and parallel thereto and a second inlet independent of said first chamber for supplying vapor to said burner.

8. In a vapor burning device, an elongated burner chamber, a vapor retort, a member establishing communication therewith and with one end of said chamber, a heating burner in proximity to said retort and in communication with said burner chamber near its other end, said retort and burner being parallel to and adjacent said chamber in combination with a separate valve controlled conduit for supplying vapor to said heating burner.

9. A heater of the character described comprising a casin a liquid fuel reservoir mounted thereon, a manifold located adjacent said reservoir, a liquid fuel generator communicating with the lower portion of said reservoir and opening into said manifold, a burner for heating said generator also communicating with said manifold, means establishing communication between the upper portion of said reservoir and said burner and mean-s for supplying air pressure to said rescrvoir for supplying fuel to said generator.

In testimonv whereof, I aflix my signature.

HARVEY BENDER REPPETTO. 

